[{"citation":{"chicago":"Franke, Patrick, Nicole Lutters, Julia Riese, and Eugeny Kenig. “Identification of Multiple Steady States in Reactive Absorption Columns Equipped with Structured Packings.”  Konferenz DECHEMA/VDI - Fluidverfahrenstechnik und Wärme- und Stoffübertragung 2026 an der Hochschule Luzern, 2026.","short":"P. Franke, N. Lutters, J. Riese, E. Kenig, in:  Konferenz DECHEMA/VDI - Fluidverfahrenstechnik und Wärme- und Stoffübertragung 2026 an der Hochschule Luzern, 2026.","apa":"Franke, P., Lutters, N., Riese, J., &#38; Kenig, E. (2026). <i>Identification of multiple steady states in reactive absorption columns equipped with structured packings</i>. DECHEMA/VDI - Fluidverfahrenstechnik und Wärme- und Stoffübertragung  2026, Luzern (CH).","ieee":"P. Franke, N. Lutters, J. Riese, and E. Kenig, “Identification of multiple steady states in reactive absorption columns equipped with structured packings,” presented at the DECHEMA/VDI - Fluidverfahrenstechnik und Wärme- und Stoffübertragung  2026, Luzern (CH), 2026.","ama":"Franke P, Lutters N, Riese J, Kenig E. Identification of multiple steady states in reactive absorption columns equipped with structured packings. In: ; 2026.","bibtex":"@inproceedings{Franke_Lutters_Riese_Kenig_2026, place={ Konferenz DECHEMA/VDI - Fluidverfahrenstechnik und Wärme- und Stoffübertragung 2026 an der Hochschule Luzern}, title={Identification of multiple steady states in reactive absorption columns equipped with structured packings}, author={Franke, Patrick and Lutters, Nicole and Riese, Julia and Kenig, Eugeny}, year={2026} }","mla":"Franke, Patrick, et al. <i>Identification of Multiple Steady States in Reactive Absorption Columns Equipped with Structured Packings</i>. 2026."},"extern":"1","place":" Konferenz DECHEMA/VDI - Fluidverfahrenstechnik und Wärme- und Stoffübertragung 2026 an der Hochschule Luzern","date_created":"2026-04-15T10:42:48Z","type":"conference_abstract","department":[{"_id":"9"},{"_id":"831"}],"year":"2026","title":"Identification of multiple steady states in reactive absorption columns equipped with structured packings","status":"public","conference":{"end_date":"2026-03-11","start_date":"2026-03-09","name":"DECHEMA/VDI - Fluidverfahrenstechnik und Wärme- und Stoffübertragung  2026","location":"Luzern (CH)"},"author":[{"full_name":"Franke, Patrick","last_name":"Franke","first_name":"Patrick","id":"93922"},{"first_name":"Nicole","last_name":"Lutters","orcid":"0009-0006-7828-8448","full_name":"Lutters, Nicole","id":"22006"},{"last_name":"Riese","first_name":"Julia","orcid":"0000-0002-3053-0534","full_name":"Riese, Julia","id":"101499"},{"last_name":"Kenig","first_name":"Eugeny","full_name":"Kenig, Eugeny","id":"665"}],"date_updated":"2026-04-15T10:43:28Z","language":[{"iso":"eng"}],"_id":"65446","user_id":"22006"},{"date_created":"2026-04-15T12:23:56Z","type":"conference","department":[{"_id":"208"}],"citation":{"bibtex":"@inproceedings{Breuing_Daniel-Söltenfuß_Kückmann_2026, title={Umgang mit (Um-)Brüchen – ein Normalzustand? Gestaltung von Innovationsprozessen aus Sicht des beruflichen Bildungspersonals}, author={Breuing, Friederike and Daniel-Söltenfuß, Desiree and Kückmann, Marie-Ann}, year={2026} }","ama":"Breuing F, Daniel-Söltenfuß D, Kückmann M-A. Umgang mit (Um-)Brüchen – ein Normalzustand? Gestaltung von Innovationsprozessen aus Sicht des beruflichen Bildungspersonals. In: ; 2026.","mla":"Breuing, Friederike, et al. <i>Umgang Mit (Um-)Brüchen – Ein Normalzustand? Gestaltung von Innovationsprozessen Aus Sicht Des Beruflichen Bildungspersonals</i>. 2026.","chicago":"Breuing, Friederike, Desiree Daniel-Söltenfuß, and Marie-Ann Kückmann. “Umgang Mit (Um-)Brüchen – Ein Normalzustand? Gestaltung von Innovationsprozessen Aus Sicht Des Beruflichen Bildungspersonals,” 2026.","short":"F. Breuing, D. Daniel-Söltenfuß, M.-A. Kückmann, in: 2026.","ieee":"F. Breuing, D. Daniel-Söltenfuß, and M.-A. Kückmann, “Umgang mit (Um-)Brüchen – ein Normalzustand? Gestaltung von Innovationsprozessen aus Sicht des beruflichen Bildungspersonals,” presented at the DGfE-Kongress “Brüche,” München, 2026.","apa":"Breuing, F., Daniel-Söltenfuß, D., &#38; Kückmann, M.-A. (2026). <i>Umgang mit (Um-)Brüchen – ein Normalzustand? Gestaltung von Innovationsprozessen aus Sicht des beruflichen Bildungspersonals</i>. DGfE-Kongress “Brüche,” München."},"language":[{"iso":"eng"}],"_id":"65450","user_id":"45696","title":"Umgang mit (Um-)Brüchen – ein Normalzustand? Gestaltung von Innovationsprozessen aus Sicht des beruflichen Bildungspersonals","status":"public","year":"2026","author":[{"id":"45696","first_name":"Friederike","orcid":"0009-0003-5494-2597","last_name":"Breuing","full_name":"Breuing, Friederike"},{"full_name":"Daniel-Söltenfuß, Desiree","last_name":"Daniel-Söltenfuß","first_name":"Desiree","id":"10186"},{"id":"25394","full_name":"Kückmann, Marie-Ann","last_name":"Kückmann","first_name":"Marie-Ann"}],"conference":{"end_date":"2026-03-25","location":"München","start_date":"2026-03-23","name":"DGfE-Kongress \"Brüche\""},"date_updated":"2026-04-15T18:24:40Z"},{"user_id":"32616","page":"12","_id":"65426","publisher":"Hannover : Technische Informationsbibliothek","status":"public","oa":"1","report_number":"409779252","project":[{"_id":"89","name":"Vollständige Bestimmung der akustischen Materialparameter von Polymeren"}],"citation":{"bibtex":"@book{Dreiling_Itner_Birk_Gravenkamp_Henning_2026, title={Vollständige Bestimmung der akustischen Materialparameter von Polymeren II}, DOI={<a href=\"https://doi.org/10.34657/33602\">https://doi.org/10.34657/33602</a>}, publisher={Hannover : Technische Informationsbibliothek}, author={Dreiling, Dmitrij and Itner, Dominik and Birk, Carolin and Gravenkamp, Hauke and Henning, Bernd}, year={2026} }","ama":"Dreiling D, Itner D, Birk C, Gravenkamp H, Henning B. <i>Vollständige Bestimmung der akustischen Materialparameter von Polymeren II</i>. Hannover : Technische Informationsbibliothek; 2026. doi:<a href=\"https://doi.org/10.34657/33602\">https://doi.org/10.34657/33602</a>","mla":"Dreiling, Dmitrij, et al. <i>Vollständige Bestimmung der akustischen Materialparameter von Polymeren II</i>. Hannover : Technische Informationsbibliothek, 2026, doi:<a href=\"https://doi.org/10.34657/33602\">https://doi.org/10.34657/33602</a>.","chicago":"Dreiling, Dmitrij, Dominik Itner, Carolin Birk, Hauke Gravenkamp, and Bernd Henning. <i>Vollständige Bestimmung der akustischen Materialparameter von Polymeren II</i>. Hannover : Technische Informationsbibliothek, 2026. <a href=\"https://doi.org/10.34657/33602\">https://doi.org/10.34657/33602</a>.","short":"D. Dreiling, D. Itner, C. Birk, H. Gravenkamp, B. Henning, Vollständige Bestimmung der akustischen Materialparameter von Polymeren II, Hannover : Technische Informationsbibliothek, 2026.","ieee":"D. Dreiling, D. Itner, C. Birk, H. Gravenkamp, and B. Henning, <i>Vollständige Bestimmung der akustischen Materialparameter von Polymeren II</i>. Hannover : Technische Informationsbibliothek, 2026.","apa":"Dreiling, D., Itner, D., Birk, C., Gravenkamp, H., &#38; Henning, B. (2026). <i>Vollständige Bestimmung der akustischen Materialparameter von Polymeren II</i>. Hannover : Technische Informationsbibliothek. <a href=\"https://doi.org/10.34657/33602\">https://doi.org/10.34657/33602</a>"},"doi":"https://doi.org/10.34657/33602","main_file_link":[{"url":"https://oa.tib.eu/renate/handle/123456789/34534","open_access":"1"}],"language":[{"iso":"ger"}],"publication_status":"published","date_updated":"2026-04-17T07:18:16Z","title":"Vollständige Bestimmung der akustischen Materialparameter von Polymeren II","year":"2026","author":[{"id":"32616","full_name":"Dreiling, Dmitrij","last_name":"Dreiling","first_name":"Dmitrij"},{"last_name":"Itner","first_name":"Dominik","full_name":"Itner, Dominik"},{"first_name":"Carolin","last_name":"Birk","full_name":"Birk, Carolin"},{"full_name":"Gravenkamp, Hauke","last_name":"Gravenkamp","first_name":"Hauke"},{"id":"213","full_name":"Henning, Bernd","last_name":"Henning","first_name":"Bernd"}],"type":"report","keyword":["Materialcharakterisierung","Polymer","Inverses Problem","Ultraschall","Optimierung"],"department":[{"_id":"49"}],"date_created":"2026-04-14T06:43:03Z","abstract":[{"text":"In diesem Forschungsprojekt wurde ein Messverfahren zur Bestimmung akustischer Materialparameter von Polymeren im Ultraschallfrequenzbereich entwickelt. Das Verfahrens sollte, die üblichen standardisierten Prüfmethoden erweitern, die bislang primär im quasistatischen oder niederfrequenten Bereich eingesetzt wurden. Im Gegensatz zu bestehenden Verfahren wie dem Zeitstandversuch oder der Dynamisch Mechanischen Analyse (DMA) nach [DIN6721] sollte die neue Methode eine nicht-invasive Charakterisierung der (visko-)elastischen Materialparameter im Frequenzbereich von 0,75 MHz bis 2,5 MHz ermöglichen. Das entwickelte Ultraschallmesssystem arbeitet nach dem Puls Echo-Prinzip und kann eine räumlich segmentierte, ringförmige Anregung erzeugen. Die Bestimmung der frequenzabhängigen Materialparameter geschieht hierbei über ein inverses Verfahren. Die Ergebnisse des Projekts zeigen, dass die Segmentierung der Anregung, die Geometrie der Probe sowie das Puls-Echo-Messprinzip die Messergebnisse sowie die Sensitivität gegenüber Scherparametern wesentlich beeinflussen. Im Rahmen des Projektes wurde auch eine statistische Auswertung des Optimierungsverfahrens hinsichtlich transversal-isotroper Materialsymmetrie mit Rayleigh-Dämpfung durchgeführt. Die Ergebnisse zeigen, dass das entwickelte Verfahren gute Konvergenzeigenschaften aufweist und sich durch verbesserte Robustheit auszeichnet.","lang":"ger"},{"lang":"eng","text":"This research project involved developing a measurement method to determine the acoustic material parameters of polymers within the ultrasonic frequency range. The aim of this method is to extend the range of standardised tests that operate in the quasi-static or low-frequency range. In contrast to existing methods such as the creep test or dynamic mechanical analysis according to [DIN6721], the developed method is capable of non-invasive characterisation of the (visco-)elastic material parameters in the frequency range of 0,75 MHz bis 2,5 MHz. The developed ultrasonic measurement setup utilises the pulse-echo principle and can generate a spatially segmented, ring-shaped excitation. The frequency-dependent material parameters are determined using an inverse method. The final results of the project show that the segmentation of the excitation, the geometry of the specimen and the pulse-echo measurement principle have a significant influence on the measurement results and the sensitivity to shear movements. As part of the project, a statistical evaluation of the optimisation process was also carried out with regard to transversely isotropic material symmetry with Rayleigh damping. The results show that the developed process has good convergence properties and is characterised by improved robustness."}]},{"date_created":"2026-04-17T05:03:02Z","department":[{"_id":"136"},{"_id":"11"}],"type":"journal_article","publication":"Journal of Information Technology & Politics","related_material":{"link":[{"relation":"confirmation","url":"https://doi.org/10.1080/19331681.2026.2660162 "}]},"language":[{"iso":"eng"}],"main_file_link":[{"url":"https://doi.org/10.1080/19331681.2026.2660162 "}],"doi":"10.1080/19331681.2026.2660162","publication_identifier":{"issn":["1933-1681","1933-169X"]},"author":[{"last_name":"Fuchs","first_name":"Christian","full_name":"Fuchs, Christian"}],"title":"What is Digital Democracy?","year":"2026","date_updated":"2026-04-17T05:04:49Z","publication_status":"published","citation":{"chicago":"Fuchs, Christian. “What Is Digital Democracy?” <i>Journal of Information Technology &#38; Politics</i>, 2026, 1–21. <a href=\"https://doi.org/10.1080/19331681.2026.2660162\">https://doi.org/10.1080/19331681.2026.2660162</a>.","short":"C. Fuchs, Journal of Information Technology &#38; Politics (2026) 1–21.","ieee":"C. Fuchs, “What is Digital Democracy?,” <i>Journal of Information Technology &#38; Politics</i>, pp. 1–21, 2026, doi: <a href=\"https://doi.org/10.1080/19331681.2026.2660162\">10.1080/19331681.2026.2660162</a>.","apa":"Fuchs, C. (2026). What is Digital Democracy? <i>Journal of Information Technology &#38; Politics</i>, 1–21. <a href=\"https://doi.org/10.1080/19331681.2026.2660162\">https://doi.org/10.1080/19331681.2026.2660162</a>","bibtex":"@article{Fuchs_2026, title={What is Digital Democracy?}, DOI={<a href=\"https://doi.org/10.1080/19331681.2026.2660162\">10.1080/19331681.2026.2660162</a>}, journal={Journal of Information Technology &#38; Politics}, author={Fuchs, Christian}, year={2026}, pages={1–21} }","ama":"Fuchs C. What is Digital Democracy? <i>Journal of Information Technology &#38; Politics</i>. Published online 2026:1-21. doi:<a href=\"https://doi.org/10.1080/19331681.2026.2660162\">10.1080/19331681.2026.2660162</a>","mla":"Fuchs, Christian. “What Is Digital Democracy?” <i>Journal of Information Technology &#38; Politics</i>, 2026, pp. 1–21, doi:<a href=\"https://doi.org/10.1080/19331681.2026.2660162\">10.1080/19331681.2026.2660162</a>."},"project":[{"name":"INNOVAtive DEmocracy Through Digitalisation","_id":"1397"}],"quality_controlled":"1","_id":"65456","page":"1-21","user_id":"21863","status":"public","has_accepted_license":"1"},{"abstract":[{"lang":"eng","text":"Beamsplitters represent fundamental components in both classical and quantum optical systems, enabling the distribution of light, as well as the generation of interference, superposition, and entanglement. However, optical networks constructed from conventional bulk 2 × 2-beamsplitters encounter inherent scalability issues, as the number of required beamsplitters scales quadratically with the number of optical modes for a fully connected network. Metasurfaces offer a promising route to\r\novercome these constraints. By manipulating light at the wavelength scale, compact optical components with advanced functionalities can be constructed, which address several modes simultaneously. In this work, we design and experimentally utilize a metasurface as a multiport beamsplitter. Furthermore, we realized a multimode interferometer composed of two cascaded metasurfaces. We characterize the individual and cascaded metasurfaces by using classical light, showing controllable splitting ratios through tunable phase relations. We then expand the approach to quantum light, employing single photons to demonstrate second- and third-order photon correlations as well as single photon interference across multiple spatial paths. These results establish metasurface-based multiport beamsplitters as a scalable and reconfigurable platform bridging classical and quantum photonics. "}],"publication":"ACS Photonics","keyword":["metasurface","beamsplitter","interferometer","quantum network","single photons","nanophotonics"],"type":"journal_article","department":[{"_id":"15"},{"_id":"230"},{"_id":"289"},{"_id":"623"}],"date_created":"2026-04-20T04:52:59Z","date_updated":"2026-04-20T05:01:00Z","publication_status":"published","article_type":"original","title":"Cascaded Metasurface Interferometer for Multipath Interference with Classical and Quantum Light","year":"2026","author":[{"last_name":"Aschwanden","first_name":"Rebecca","full_name":"Aschwanden, Rebecca"},{"full_name":"Claro-Rodríguez, Nicolás","last_name":"Claro-Rodríguez","first_name":"Nicolás"},{"full_name":"Zhao, Ruizhe","first_name":"Ruizhe","last_name":"Zhao"},{"id":"72332","last_name":"Kallert","orcid":"0009-0007-5230-0223","first_name":"Patricia Anna Maria","full_name":"Kallert, Patricia Anna Maria"},{"full_name":"Krieger, Tobias","first_name":"Tobias","last_name":"Krieger"},{"full_name":"Buchinger, Quirin","last_name":"Buchinger","first_name":"Quirin"},{"full_name":"Covre da Silva, Saimon F.","last_name":"Covre da Silva","first_name":"Saimon F."},{"first_name":"Sandra","last_name":"Stroj","full_name":"Stroj, Sandra"},{"last_name":"Rota","first_name":"Michele","full_name":"Rota, Michele"},{"last_name":"Höfling","first_name":"Sven","full_name":"Höfling, Sven"},{"full_name":"Huber-Loyola, Tobias","last_name":"Huber-Loyola","first_name":"Tobias"},{"last_name":"Rastelli","first_name":"Armando","full_name":"Rastelli, Armando"},{"full_name":"Trotta, Rinaldo","first_name":"Rinaldo","last_name":"Trotta"},{"full_name":"Huang, Lingling","last_name":"Huang","first_name":"Lingling"},{"full_name":"Bartley, Tim","first_name":"Tim","last_name":"Bartley","id":"49683"},{"last_name":"Jöns","first_name":"Klaus","full_name":"Jöns, Klaus","id":"85353"},{"id":"30525","orcid":"0000-0002-8662-1101","last_name":"Zentgraf","first_name":"Thomas","full_name":"Zentgraf, Thomas"}],"publication_identifier":{"issn":["2330-4022","2330-4022"]},"doi":"10.1021/acsphotonics.6c00096","main_file_link":[{"url":"https://pubs.acs.org/doi/10.1021/acsphotonics.6c00096"}],"article_number":"acsphotonics.6c00096","language":[{"iso":"eng"}],"quality_controlled":"1","project":[{"name":"TRR 142 - Project Area A","_id":"54"},{"name":"TRR 142; TP A08: Nichtlineare Kopplung von Zwischenschicht-Exzitonen in van der Waals-Heterostrukturen an plasmonische und dielektrische Nanokavitäten","_id":"65"},{"name":"TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen","_id":"53"}],"citation":{"bibtex":"@article{Aschwanden_Claro-Rodríguez_Zhao_Kallert_Krieger_Buchinger_Covre da Silva_Stroj_Rota_Höfling_et al._2026, title={Cascaded Metasurface Interferometer for Multipath Interference with Classical and Quantum Light}, DOI={<a href=\"https://doi.org/10.1021/acsphotonics.6c00096\">10.1021/acsphotonics.6c00096</a>}, number={acsphotonics.6c00096}, journal={ACS Photonics}, publisher={American Chemical Society (ACS)}, author={Aschwanden, Rebecca and Claro-Rodríguez, Nicolás and Zhao, Ruizhe and Kallert, Patricia Anna Maria and Krieger, Tobias and Buchinger, Quirin and Covre da Silva, Saimon F. and Stroj, Sandra and Rota, Michele and Höfling, Sven and et al.}, year={2026} }","ama":"Aschwanden R, Claro-Rodríguez N, Zhao R, et al. Cascaded Metasurface Interferometer for Multipath Interference with Classical and Quantum Light. <i>ACS Photonics</i>. Published online 2026. doi:<a href=\"https://doi.org/10.1021/acsphotonics.6c00096\">10.1021/acsphotonics.6c00096</a>","mla":"Aschwanden, Rebecca, et al. “Cascaded Metasurface Interferometer for Multipath Interference with Classical and Quantum Light.” <i>ACS Photonics</i>, acsphotonics.6c00096, American Chemical Society (ACS), 2026, doi:<a href=\"https://doi.org/10.1021/acsphotonics.6c00096\">10.1021/acsphotonics.6c00096</a>.","chicago":"Aschwanden, Rebecca, Nicolás Claro-Rodríguez, Ruizhe Zhao, Patricia Anna Maria Kallert, Tobias Krieger, Quirin Buchinger, Saimon F. Covre da Silva, et al. “Cascaded Metasurface Interferometer for Multipath Interference with Classical and Quantum Light.” <i>ACS Photonics</i>, 2026. <a href=\"https://doi.org/10.1021/acsphotonics.6c00096\">https://doi.org/10.1021/acsphotonics.6c00096</a>.","short":"R. Aschwanden, N. Claro-Rodríguez, R. Zhao, P.A.M. Kallert, T. Krieger, Q. Buchinger, S.F. Covre da Silva, S. Stroj, M. Rota, S. Höfling, T. Huber-Loyola, A. Rastelli, R. Trotta, L. Huang, T. Bartley, K. Jöns, T. Zentgraf, ACS Photonics (2026).","ieee":"R. Aschwanden <i>et al.</i>, “Cascaded Metasurface Interferometer for Multipath Interference with Classical and Quantum Light,” <i>ACS Photonics</i>, Art. no. acsphotonics.6c00096, 2026, doi: <a href=\"https://doi.org/10.1021/acsphotonics.6c00096\">10.1021/acsphotonics.6c00096</a>.","apa":"Aschwanden, R., Claro-Rodríguez, N., Zhao, R., Kallert, P. A. M., Krieger, T., Buchinger, Q., Covre da Silva, S. F., Stroj, S., Rota, M., Höfling, S., Huber-Loyola, T., Rastelli, A., Trotta, R., Huang, L., Bartley, T., Jöns, K., &#38; Zentgraf, T. (2026). Cascaded Metasurface Interferometer for Multipath Interference with Classical and Quantum Light. <i>ACS Photonics</i>, Article acsphotonics.6c00096. <a href=\"https://doi.org/10.1021/acsphotonics.6c00096\">https://doi.org/10.1021/acsphotonics.6c00096</a>"},"external_id":{"arxiv":["2603.25090"]},"status":"public","user_id":"30525","publisher":"American Chemical Society (ACS)","_id":"65460"},{"_id":"65316","publisher":"American Chemical Society (ACS)","page":"2128-2133","volume":13,"user_id":"30525","status":"public","external_id":{"arxiv":["2512.14452"]},"citation":{"ama":"Wetter H, Wingenbach J, Rehberg F, Gao W, Schumacher S, Zentgraf T. Polarization- and Wave-Vector Selective Optical Metasurface with Near-Field Coupling. <i>ACS Photonics</i>. 2026;13:2128-2133. doi:<a href=\"https://doi.org/10.1021/acsphotonics.5c02865\">10.1021/acsphotonics.5c02865</a>","bibtex":"@article{Wetter_Wingenbach_Rehberg_Gao_Schumacher_Zentgraf_2026, title={Polarization- and Wave-Vector Selective Optical Metasurface with Near-Field Coupling}, volume={13}, DOI={<a href=\"https://doi.org/10.1021/acsphotonics.5c02865\">10.1021/acsphotonics.5c02865</a>}, journal={ACS Photonics}, publisher={American Chemical Society (ACS)}, author={Wetter, Helene and Wingenbach, Jan and Rehberg, Falk and Gao, Wenlong and Schumacher, Stefan and Zentgraf, Thomas}, year={2026}, pages={2128–2133} }","mla":"Wetter, Helene, et al. “Polarization- and Wave-Vector Selective Optical Metasurface with Near-Field Coupling.” <i>ACS Photonics</i>, vol. 13, American Chemical Society (ACS), 2026, pp. 2128–33, doi:<a href=\"https://doi.org/10.1021/acsphotonics.5c02865\">10.1021/acsphotonics.5c02865</a>.","chicago":"Wetter, Helene, Jan Wingenbach, Falk Rehberg, Wenlong Gao, Stefan Schumacher, and Thomas Zentgraf. “Polarization- and Wave-Vector Selective Optical Metasurface with Near-Field Coupling.” <i>ACS Photonics</i> 13 (2026): 2128–33. <a href=\"https://doi.org/10.1021/acsphotonics.5c02865\">https://doi.org/10.1021/acsphotonics.5c02865</a>.","short":"H. Wetter, J. Wingenbach, F. Rehberg, W. Gao, S. Schumacher, T. Zentgraf, ACS Photonics 13 (2026) 2128–2133.","apa":"Wetter, H., Wingenbach, J., Rehberg, F., Gao, W., Schumacher, S., &#38; Zentgraf, T. (2026). Polarization- and Wave-Vector Selective Optical Metasurface with Near-Field Coupling. <i>ACS Photonics</i>, <i>13</i>, 2128–2133. <a href=\"https://doi.org/10.1021/acsphotonics.5c02865\">https://doi.org/10.1021/acsphotonics.5c02865</a>","ieee":"H. Wetter, J. Wingenbach, F. Rehberg, W. Gao, S. Schumacher, and T. Zentgraf, “Polarization- and Wave-Vector Selective Optical Metasurface with Near-Field Coupling,” <i>ACS Photonics</i>, vol. 13, pp. 2128–2133, 2026, doi: <a href=\"https://doi.org/10.1021/acsphotonics.5c02865\">10.1021/acsphotonics.5c02865</a>."},"quality_controlled":"1","language":[{"iso":"eng"}],"main_file_link":[{"url":"https://pubs.acs.org/doi/10.1021/acsphotonics.5c02865"}],"doi":"10.1021/acsphotonics.5c02865","author":[{"last_name":"Wetter","first_name":"Helene","full_name":"Wetter, Helene"},{"last_name":"Wingenbach","first_name":"Jan","full_name":"Wingenbach, Jan","id":"69187"},{"first_name":"Falk","last_name":"Rehberg","full_name":"Rehberg, Falk"},{"full_name":"Gao, Wenlong","last_name":"Gao","first_name":"Wenlong"},{"full_name":"Schumacher, Stefan","orcid":"0000-0003-4042-4951","first_name":"Stefan","last_name":"Schumacher","id":"27271"},{"orcid":"0000-0002-8662-1101","last_name":"Zentgraf","first_name":"Thomas","full_name":"Zentgraf, Thomas","id":"30525"}],"publication_identifier":{"issn":["2330-4022","2330-4022"]},"title":"Polarization- and Wave-Vector Selective Optical Metasurface with Near-Field Coupling","year":"2026","intvolume":"        13","publication_status":"published","date_updated":"2026-04-20T05:09:57Z","date_created":"2026-04-02T07:25:30Z","department":[{"_id":"15"},{"_id":"230"},{"_id":"289"},{"_id":"623"}],"type":"journal_article","keyword":["metasurface","waveguides","Dirac point","polarization","negative coupling"],"publication":"ACS Photonics","abstract":[{"lang":"eng","text":"Metasurfaces are powerful tools for manipulating light using small structures on the nanoscale. In most metasurfaces, near-field couplings are treated as being unfavorable perturbations. Here, we experimentally investigate a structure consisting of sinusoidally modulated silicon waveguides where near-field coupling of local resonances leads to negative coupling, i.e., a negative coupling constant. This gives rise to wave-vector-dependent eigenstates of elliptical, linear, and circular polarizations. In particular, fully circular polarization states are not only present at a single point in momentum space (k-space) but also along a line. This circular polarization line, as well as a linear polarization line, emanates from a polarization degeneracy at the Dirac point. We experimentally validate the existence of these eigenstates and demonstrate the energy-, polarization-, and wave vector dependence of this metasurface as well as its sensitivity to fabrication tolerances. By tuning the incident k-vector, certain polarization-energy eigenstates are strongly reflected, allowing for uses in angle-tunable polarization filters and light sources."}]},{"ddc":["620"],"doi":"https://doi.org/10.1016/j.euromechsol.2026.106137","user_id":"57708","_id":"65458","language":[{"iso":"eng"}],"date_updated":"2026-04-20T11:28:43Z","has_accepted_license":"1","year":"2026","status":"public","title":"A gradient-damage model for amorphous glassy polymers: Consistent formulation of viscoplasticity and damage evolution in a micromorphic framework","author":[{"first_name":"Ayoub","last_name":"Hamdoun","full_name":"Hamdoun, Ayoub","id":"57708"},{"id":"335","first_name":"Rolf","last_name":"Mahnken","full_name":"Mahnken, Rolf"},{"id":"106876","last_name":"Ostwald","orcid":"0000-0003-2147-8444","first_name":"Richard","full_name":"Ostwald, Richard"}],"type":"journal_article","oa":"1","department":[{"_id":"9"},{"_id":"952"},{"_id":"321"}],"file":[{"creator":"ahamdoun","date_created":"2026-04-18T07:19:12Z","file_name":"1-s2.0-S0997753826001233-main.pdf","file_size":3153415,"access_level":"open_access","relation":"main_file","date_updated":"2026-04-18T07:19:12Z","file_id":"65459","content_type":"application/pdf"}],"date_created":"2026-04-18T07:19:21Z","publication":"European Journal of Mechanics / A Solids","file_date_updated":"2026-04-18T07:19:12Z","citation":{"bibtex":"@article{Hamdoun_Mahnken_Ostwald_2026, title={A gradient-damage model for amorphous glassy polymers: Consistent formulation of viscoplasticity and damage evolution in a micromorphic framework}, DOI={<a href=\"https://doi.org/10.1016/j.euromechsol.2026.106137\">https://doi.org/10.1016/j.euromechsol.2026.106137</a>}, journal={European Journal of Mechanics / A Solids}, author={Hamdoun, Ayoub and Mahnken, Rolf and Ostwald, Richard}, year={2026} }","short":"A. Hamdoun, R. Mahnken, R. Ostwald, European Journal of Mechanics / A Solids (2026).","ama":"Hamdoun A, Mahnken R, Ostwald R. A gradient-damage model for amorphous glassy polymers: Consistent formulation of viscoplasticity and damage evolution in a micromorphic framework. <i>European Journal of Mechanics / A Solids</i>. Published online 2026. doi:<a href=\"https://doi.org/10.1016/j.euromechsol.2026.106137\">https://doi.org/10.1016/j.euromechsol.2026.106137</a>","chicago":"Hamdoun, Ayoub, Rolf Mahnken, and Richard Ostwald. “A Gradient-Damage Model for Amorphous Glassy Polymers: Consistent Formulation of Viscoplasticity and Damage Evolution in a Micromorphic Framework.” <i>European Journal of Mechanics / A Solids</i>, 2026. <a href=\"https://doi.org/10.1016/j.euromechsol.2026.106137\">https://doi.org/10.1016/j.euromechsol.2026.106137</a>.","ieee":"A. Hamdoun, R. Mahnken, and R. Ostwald, “A gradient-damage model for amorphous glassy polymers: Consistent formulation of viscoplasticity and damage evolution in a micromorphic framework,” <i>European Journal of Mechanics / A Solids</i>, 2026, doi: <a href=\"https://doi.org/10.1016/j.euromechsol.2026.106137\">https://doi.org/10.1016/j.euromechsol.2026.106137</a>.","apa":"Hamdoun, A., Mahnken, R., &#38; Ostwald, R. (2026). A gradient-damage model for amorphous glassy polymers: Consistent formulation of viscoplasticity and damage evolution in a micromorphic framework. <i>European Journal of Mechanics / A Solids</i>. <a href=\"https://doi.org/10.1016/j.euromechsol.2026.106137\">https://doi.org/10.1016/j.euromechsol.2026.106137</a>","mla":"Hamdoun, Ayoub, et al. “A Gradient-Damage Model for Amorphous Glassy Polymers: Consistent Formulation of Viscoplasticity and Damage Evolution in a Micromorphic Framework.” <i>European Journal of Mechanics / A Solids</i>, 2026, doi:<a href=\"https://doi.org/10.1016/j.euromechsol.2026.106137\">https://doi.org/10.1016/j.euromechsol.2026.106137</a>."}},{"abstract":[{"text":"We present an extremely simple polynomial-space exponential-time\r\n$(1-\\varepsilon)$-approximation algorithm for MAX-k-SAT that is (slightly)\r\nfaster than the previous known polynomial-space $(1-\\varepsilon)$-approximation\r\nalgorithms by Hirsch (Discrete Applied Mathematics, 2003) and Escoffier,\r\nPaschos and Tourniaire (Theoretical Computer Science, 2014). Our algorithm\r\nrepeatedly samples an assignment uniformly at random until finding an\r\nassignment that satisfies a large enough fraction of clauses. Surprisingly, we\r\ncan show the efficiency of this simpler approach by proving that in any\r\ninstance of MAX-k-SAT (or more generally any instance of MAXCSP), an\r\nexponential number of assignments satisfy a fraction of clauses close to the\r\noptimal value.","lang":"eng"}],"publication":"SIAM Symposium on Simplicity in Algorithms (SOSA)","citation":{"short":"H. Buhrman, S. Gharibian, Z. Landau, F.L. Gall, N. Schuch, S. Tamaki, in: SIAM Symposium on Simplicity in Algorithms (SOSA), n.d., pp. 247–253.","chicago":"Buhrman, Harry, Sevag Gharibian, Zeph Landau, François Le Gall, Norbert Schuch, and Suguru Tamaki. “A Simpler Exponential-Time Approximation Algorithm for MAX-k-SAT.” In <i>SIAM Symposium on Simplicity in Algorithms (SOSA)</i>, 247–53, n.d.","ieee":"H. Buhrman, S. Gharibian, Z. Landau, F. L. Gall, N. Schuch, and S. Tamaki, “A Simpler Exponential-Time Approximation Algorithm for MAX-k-SAT,” in <i>SIAM Symposium on Simplicity in Algorithms (SOSA)</i>, pp. 247–253.","apa":"Buhrman, H., Gharibian, S., Landau, Z., Gall, F. L., Schuch, N., &#38; Tamaki, S. (n.d.). A Simpler Exponential-Time Approximation Algorithm for MAX-k-SAT. <i>SIAM Symposium on Simplicity in Algorithms (SOSA)</i>, 247–253.","bibtex":"@inproceedings{Buhrman_Gharibian_Landau_Gall_Schuch_Tamaki, title={A Simpler Exponential-Time Approximation Algorithm for MAX-k-SAT}, booktitle={SIAM Symposium on Simplicity in Algorithms (SOSA)}, author={Buhrman, Harry and Gharibian, Sevag and Landau, Zeph and Gall, François Le and Schuch, Norbert and Tamaki, Suguru}, pages={247–253} }","ama":"Buhrman H, Gharibian S, Landau Z, Gall FL, Schuch N, Tamaki S. A Simpler Exponential-Time Approximation Algorithm for MAX-k-SAT. In: <i>SIAM Symposium on Simplicity in Algorithms (SOSA)</i>. ; :247-253.","mla":"Buhrman, Harry, et al. “A Simpler Exponential-Time Approximation Algorithm for MAX-k-SAT.” <i>SIAM Symposium on Simplicity in Algorithms (SOSA)</i>, pp. 247–53."},"type":"conference","department":[{"_id":"7"},{"_id":"623"}],"external_id":{"arxiv":["2510.18164"]},"date_created":"2025-10-22T09:33:22Z","publication_status":"inpress","date_updated":"2026-04-20T13:53:03Z","status":"public","title":"A Simpler Exponential-Time Approximation Algorithm for MAX-k-SAT","year":"2026","author":[{"full_name":"Buhrman, Harry","last_name":"Buhrman","first_name":"Harry"},{"full_name":"Gharibian, Sevag","first_name":"Sevag","last_name":"Gharibian","orcid":"0000-0002-9992-3379","id":"71541"},{"full_name":"Landau, Zeph","last_name":"Landau","first_name":"Zeph"},{"last_name":"Gall","first_name":"François Le","full_name":"Gall, François Le"},{"first_name":"Norbert","last_name":"Schuch","full_name":"Schuch, Norbert"},{"full_name":"Tamaki, Suguru","last_name":"Tamaki","first_name":"Suguru"}],"user_id":"71541","page":"247-253","language":[{"iso":"eng"}],"_id":"61922"},{"citation":{"ama":"Eichler A, Büchter T, Binder K. Conceptualising Risk and Risk Literacy—results of a Delphi Study Konzeptualisierung von Risiko und Risikokompetenz – Ergebnisse einer Delphi-Studie. <i>Journal für Mathematik-Didaktik</i>. 2026;47(1). doi:<a href=\"https://doi.org/10.1007/s13138-026-00268-0\">10.1007/s13138-026-00268-0</a>","bibtex":"@article{Eichler_Büchter_Binder_2026, title={Conceptualising Risk and Risk Literacy—results of a Delphi Study Konzeptualisierung von Risiko und Risikokompetenz – Ergebnisse einer Delphi-Studie}, volume={47}, DOI={<a href=\"https://doi.org/10.1007/s13138-026-00268-0\">10.1007/s13138-026-00268-0</a>}, number={12}, journal={Journal für Mathematik-Didaktik}, publisher={Springer Science and Business Media LLC}, author={Eichler, Andreas and Büchter, Theresa and Binder, Karin}, year={2026} }","mla":"Eichler, Andreas, et al. “Conceptualising Risk and Risk Literacy—Results of a Delphi Study Konzeptualisierung von Risiko Und Risikokompetenz – Ergebnisse Einer Delphi-Studie.” <i>Journal Für Mathematik-Didaktik</i>, vol. 47, no. 1, 2, Springer Science and Business Media LLC, 2026, doi:<a href=\"https://doi.org/10.1007/s13138-026-00268-0\">10.1007/s13138-026-00268-0</a>.","chicago":"Eichler, Andreas, Theresa Büchter, and Karin Binder. “Conceptualising Risk and Risk Literacy—Results of a Delphi Study Konzeptualisierung von Risiko Und Risikokompetenz – Ergebnisse Einer Delphi-Studie.” <i>Journal Für Mathematik-Didaktik</i> 47, no. 1 (2026). <a href=\"https://doi.org/10.1007/s13138-026-00268-0\">https://doi.org/10.1007/s13138-026-00268-0</a>.","short":"A. Eichler, T. Büchter, K. Binder, Journal Für Mathematik-Didaktik 47 (2026).","apa":"Eichler, A., Büchter, T., &#38; Binder, K. (2026). Conceptualising Risk and Risk Literacy—results of a Delphi Study Konzeptualisierung von Risiko und Risikokompetenz – Ergebnisse einer Delphi-Studie. <i>Journal Für Mathematik-Didaktik</i>, <i>47</i>(1), Article 2. <a href=\"https://doi.org/10.1007/s13138-026-00268-0\">https://doi.org/10.1007/s13138-026-00268-0</a>","ieee":"A. Eichler, T. Büchter, and K. Binder, “Conceptualising Risk and Risk Literacy—results of a Delphi Study Konzeptualisierung von Risiko und Risikokompetenz – Ergebnisse einer Delphi-Studie,” <i>Journal für Mathematik-Didaktik</i>, vol. 47, no. 1, Art. no. 2, 2026, doi: <a href=\"https://doi.org/10.1007/s13138-026-00268-0\">10.1007/s13138-026-00268-0</a>."},"file_date_updated":"2026-04-20T16:20:33Z","volume":47,"ddc":["370"],"user_id":"83381","_id":"65386","publisher":"Springer Science and Business Media LLC","has_accepted_license":"1","status":"public","type":"journal_article","date_created":"2026-04-10T05:49:41Z","file":[{"file_size":2030179,"access_level":"closed","file_name":"Eichler Büchter Binder 2026 Conceptualising Risk and Risk Literacy - results of a Delphi Study.pdf","date_updated":"2026-04-20T16:20:33Z","relation":"main_file","success":1,"content_type":"application/pdf","file_id":"65468","creator":"binder","date_created":"2026-04-20T16:20:33Z"}],"abstract":[{"lang":"eng","text":"<jats:title>Abstract</jats:title>\r\n                  <jats:p>\r\n                    Risk is an integral part of modern societies and therefore school education, and in particular mathematics education, should develop students’ risk literacy. Students’ risk literacy is part of the interdisciplinary research project siMINT (Understanding complex STEM topics: Using simulations to promote competences for the 21st century). One first challenge in this project was to find a common ground for the inconsistently conceptualised terms of risk and risk literacy. Consequently, the aim of this paper is to contribute to the conceptualisation of risk and risk literacy. The first part of this paper provides a literature review on these areas, resulting in a working conceptualisation of the two concepts. We further carried out two consecutive steps of a Delphi study with\r\n                    <jats:italic>N</jats:italic>\r\n                     = 15 and\r\n                    <jats:italic>N</jats:italic>\r\n                     = 12 experts respectively, to develop a common conceptualisation based on the plurality of different dimensions and elements of risk and risk literacy. Based on the results of the first step of the Delphi study, we modified our working conceptualisation, using a common model of risk and risk literacy with different dimensions. In the second step of the Delphi study, the experts comment on (i) the dimensions and (ii) the elements of risk and risk literacy in these dimensions. The results showed that the experts are able to locate their individual definitions of risk in the model with three dimensions (relation between risk/uncertainty, connotation, and mathematical object) that we developed and to formulate reasons for their allocation. Furthermore, the results revealed that risk literacy consists of subsets of mathematical and non-mathematical elements that the experts rate differently with regard to their importance. In general, the results contribute to clarifying the constructs of risk and risk literacy as a basis for developing approaches to improve risk literacy.\r\n                  </jats:p>"}],"publication":"Journal für Mathematik-Didaktik","issue":"1","doi":"10.1007/s13138-026-00268-0","language":[{"iso":"eng"}],"article_number":"2","intvolume":"        47","date_updated":"2026-04-20T16:21:27Z","publication_status":"published","author":[{"first_name":"Andreas","last_name":"Eichler","full_name":"Eichler, Andreas"},{"full_name":"Büchter, Theresa","last_name":"Büchter","first_name":"Theresa"},{"full_name":"Binder, Karin","last_name":"Binder","first_name":"Karin","id":"83381"}],"publication_identifier":{"issn":["0173-5322","1869-2699"]},"title":"Conceptualising Risk and Risk Literacy—results of a Delphi Study Konzeptualisierung von Risiko und Risikokompetenz – Ergebnisse einer Delphi-Studie","year":"2026"},{"date_created":"2026-02-21T08:08:32Z","file":[{"date_updated":"2026-04-20T16:27:58Z","relation":"main_file","access_level":"closed","file_size":1315590,"file_name":"Wiesner Krauss Stegmüller Binder 2026 Is flipped classroom really superior.pdf","success":1,"content_type":"application/pdf","file_id":"65471","creator":"binder","date_created":"2026-04-20T16:27:58Z"}],"type":"journal_article","publication":"Frontiers in Education","abstract":[{"text":"<jats:p>\r\n                    There is a contradiction between seven meta-analyses, all of which indicate a substantial benefit of the flipped classroom (FC) method for K-12 teaching and some larger study that found no such benefit when compared to “traditional” teaching. In the theoretical part of the paper, we shed light on this contradiction by consulting general literature on meta-analyses. Ranking the 50 included FC studies by the number of classes per experimental condition, we found a negative correlation between the “size” of a study and the effect in favor of FC. In the empirical part, we present an FC study with three conditions concerning mathematical teaching, based on\r\n                    <jats:italic>n</jats:italic>\r\n                     = 950 students aged 11–13, in which many relevant covariates (e.g., quality of instruction) were addressed. One FC condition was based on students’ knowledge acquisition through instructional videos at home (FCn:\r\n                    <jats:italic>n</jats:italic>\r\n                     = 12 classes). Considering that self-regulation support might play a crucial role especially for young students working at home, another FC condition (FCS:\r\n                    <jats:italic>n</jats:italic>\r\n                     = 12 classes) was implemented, in which students could learn additional math-free strategies concerning watching instructional videos. Both FC-conditions were experimentally compared with a control group of traditional teaching (TT:\r\n                    <jats:italic>n</jats:italic>\r\n                     = 13 classes). No significant effect on learning gains was found between FCn and TT, indicating that “flipping” alone may not be more effective per se. However, a significant difference was found between FCS and FCn. Thus, supporting students’ self-regulation in addition may in indeed open the door to successful FC, even with very young students.\r\n                  </jats:p>","lang":"eng"}],"language":[{"iso":"eng"}],"article_number":"1741733","doi":"10.3389/feduc.2026.1741733","author":[{"last_name":"Wiesner","first_name":"Patrick","full_name":"Wiesner, Patrick"},{"full_name":"Krauss, Stefan","first_name":"Stefan","last_name":"Krauss"},{"last_name":"Stegmüller","first_name":"Nathalie","full_name":"Stegmüller, Nathalie"},{"id":"83381","first_name":"Karin","last_name":"Binder","full_name":"Binder, Karin"}],"publication_identifier":{"issn":["2504-284X"]},"year":"2026","title":"Is flipped classroom really superior?—Questioning the flip in K-12 teaching","intvolume":"        11","date_updated":"2026-04-20T16:28:13Z","publication_status":"published","citation":{"short":"P. Wiesner, S. Krauss, N. Stegmüller, K. Binder, Frontiers in Education 11 (2026).","chicago":"Wiesner, Patrick, Stefan Krauss, Nathalie Stegmüller, and Karin Binder. “Is Flipped Classroom Really Superior?—Questioning the Flip in K-12 Teaching.” <i>Frontiers in Education</i> 11 (2026). <a href=\"https://doi.org/10.3389/feduc.2026.1741733\">https://doi.org/10.3389/feduc.2026.1741733</a>.","ieee":"P. Wiesner, S. Krauss, N. Stegmüller, and K. Binder, “Is flipped classroom really superior?—Questioning the flip in K-12 teaching,” <i>Frontiers in Education</i>, vol. 11, Art. no. 1741733, 2026, doi: <a href=\"https://doi.org/10.3389/feduc.2026.1741733\">10.3389/feduc.2026.1741733</a>.","apa":"Wiesner, P., Krauss, S., Stegmüller, N., &#38; Binder, K. (2026). Is flipped classroom really superior?—Questioning the flip in K-12 teaching. <i>Frontiers in Education</i>, <i>11</i>, Article 1741733. <a href=\"https://doi.org/10.3389/feduc.2026.1741733\">https://doi.org/10.3389/feduc.2026.1741733</a>","bibtex":"@article{Wiesner_Krauss_Stegmüller_Binder_2026, title={Is flipped classroom really superior?—Questioning the flip in K-12 teaching}, volume={11}, DOI={<a href=\"https://doi.org/10.3389/feduc.2026.1741733\">10.3389/feduc.2026.1741733</a>}, number={1741733}, journal={Frontiers in Education}, publisher={Frontiers Media SA}, author={Wiesner, Patrick and Krauss, Stefan and Stegmüller, Nathalie and Binder, Karin}, year={2026} }","ama":"Wiesner P, Krauss S, Stegmüller N, Binder K. Is flipped classroom really superior?—Questioning the flip in K-12 teaching. <i>Frontiers in Education</i>. 2026;11. doi:<a href=\"https://doi.org/10.3389/feduc.2026.1741733\">10.3389/feduc.2026.1741733</a>","mla":"Wiesner, Patrick, et al. “Is Flipped Classroom Really Superior?—Questioning the Flip in K-12 Teaching.” <i>Frontiers in Education</i>, vol. 11, 1741733, Frontiers Media SA, 2026, doi:<a href=\"https://doi.org/10.3389/feduc.2026.1741733\">10.3389/feduc.2026.1741733</a>."},"file_date_updated":"2026-04-20T16:27:58Z","_id":"64580","publisher":"Frontiers Media SA","volume":11,"ddc":["370"],"user_id":"83381","status":"public","has_accepted_license":"1"},{"file_date_updated":"2026-04-20T16:18:30Z","citation":{"mla":"Birk, Lisa, et al., editors. <i>14th IASE Satellite Conference “Statistics and Data Science Education in STEAM.”</i> International Association for Statistics Education, 2026, doi:<a href=\"https://doi.org/10.52041/iase25.158\">10.52041/iase25.158</a>.","ama":"Birk L, Loth G, Jotzo L, Binder K, Frischemeier D, eds. <i>14th IASE Satellite Conference “Statistics and Data Science Education in STEAM.”</i> International Association for Statistics Education; 2026. doi:<a href=\"https://doi.org/10.52041/iase25.158\">10.52041/iase25.158</a>","bibtex":"@book{Birk_Loth_Jotzo_Binder_Frischemeier_2026, title={14th IASE Satellite Conference “Statistics and Data Science Education in STEAM”}, DOI={<a href=\"https://doi.org/10.52041/iase25.158\">10.52041/iase25.158</a>}, publisher={International Association for Statistics Education}, year={2026} }","apa":"Birk, L., Loth, G., Jotzo, L., Binder, K., &#38; Frischemeier, D. (Eds.). (2026). <i>14th IASE Satellite Conference “Statistics and Data Science Education in STEAM.”</i> International Association for Statistics Education. <a href=\"https://doi.org/10.52041/iase25.158\">https://doi.org/10.52041/iase25.158</a>","ieee":"L. Birk, G. Loth, L. Jotzo, K. Binder, and D. Frischemeier, Eds., <i>14th IASE Satellite Conference “Statistics and Data Science Education in STEAM.”</i> International Association for Statistics Education, 2026.","short":"L. Birk, G. Loth, L. Jotzo, K. Binder, D. 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Frischemeier (Eds.), Proceedings of the IASE 2025 Satellite Conference - Statistics and Data Science Education in STEAM, International Association for Statistics Education, 2026."}},{"has_accepted_license":"1","status":"public","ddc":["370"],"user_id":"83381","editor":[{"last_name":"Birk","first_name":"Lisa","full_name":"Birk, Lisa"},{"last_name":"Loth","first_name":"Gerrit","full_name":"Loth, Gerrit"},{"first_name":"Luca","last_name":"Jotzo","full_name":"Jotzo, Luca"},{"full_name":"Binder, Karin","first_name":"Karin","last_name":"Binder"},{"last_name":"Frischemeier","first_name":"Daniel","full_name":"Frischemeier, Daniel"}],"_id":"64583","publisher":"International Association for Statistics Education","file_date_updated":"2026-04-20T16:23:48Z","citation":{"mla":"Büchter, Theresa, et al. “The Integration of Probability-Based Arguments in Risk-Related Contexts.” <i>Proceedings of the IASE 2025 Satellite Conference - Statistics and Data Science Education in STEAM</i>, edited by Lisa Birk et al., International Association for Statistics Education, 2026, doi:<a href=\"https://doi.org/10.52041/iase25.125\">10.52041/iase25.125</a>.","bibtex":"@inproceedings{Büchter_Binder_Eichler_2026, title={The integration of probability-based arguments in risk-related contexts}, DOI={<a href=\"https://doi.org/10.52041/iase25.125\">10.52041/iase25.125</a>}, booktitle={Proceedings of the IASE 2025 Satellite Conference - Statistics and Data Science Education in STEAM}, publisher={International Association for Statistics Education}, author={Büchter, Theresa and Binder, Karin and Eichler, Andreas}, editor={Birk, Lisa and Loth, Gerrit and Jotzo, Luca and Binder, Karin and Frischemeier, Daniel}, year={2026} }","ama":"Büchter T, Binder K, Eichler A. 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Frischemeier (Eds.), <i>Proceedings of the IASE 2025 Satellite Conference - Statistics and Data Science Education in STEAM</i>. International Association for Statistics Education. <a href=\"https://doi.org/10.52041/iase25.125\">https://doi.org/10.52041/iase25.125</a>","chicago":"Büchter, Theresa, Karin Binder, and Andreas Eichler. “The Integration of Probability-Based Arguments in Risk-Related Contexts.” In <i>Proceedings of the IASE 2025 Satellite Conference - Statistics and Data Science Education in STEAM</i>, edited by Lisa Birk, Gerrit Loth, Luca Jotzo, Karin Binder, and Daniel Frischemeier. International Association for Statistics Education, 2026. <a href=\"https://doi.org/10.52041/iase25.125\">https://doi.org/10.52041/iase25.125</a>.","short":"T. Büchter, K. Binder, A. Eichler, in: L. Birk, G. Loth, L. Jotzo, K. Binder, D. 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Critical Remarks on Climate-Technical Imagery Production and the Possibilities of Desirable Futures. <i>ffk Journal</i>. 2026;(11):171–183. doi:<a href=\"http://dx.doi.org/10.25969/mediarep/24633\">http://dx.doi.org/10.25969/mediarep/24633</a>","bibtex":"@article{Henschen_Töpfer_2026, title={Images of Climate Crises. Critical Remarks on Climate-Technical Imagery Production and the Possibilities of Desirable Futures}, DOI={<a href=\"http://dx.doi.org/10.25969/mediarep/24633\">http://dx.doi.org/10.25969/mediarep/24633</a>}, number={11}, journal={ffk Journal}, author={Henschen, Patrick and Töpfer, Lew}, year={2026}, pages={171–183} }"},"publication":"ffk Journal","issue":"11","date_created":"2026-04-20T09:53:24Z","type":"journal_article"},{"jel":["L80"],"status":"public","has_accepted_license":"1","publisher":"Springer Science and Business Media LLC","_id":"65476","volume":36,"ddc":["380"],"user_id":"59677","citation":{"ama":"Beverungen D, Poeppelbuss J, Hemmrich S, Iqbal T. Service through communication—Conceptualizing service systems with Luhmann’s systems theory. <i>Electronic Markets</i>. 2026;36(1). doi:<a href=\"https://doi.org/10.1007/s12525-026-00889-w\">10.1007/s12525-026-00889-w</a>","bibtex":"@article{Beverungen_Poeppelbuss_Hemmrich_Iqbal_2026, title={Service through communication—Conceptualizing service systems with Luhmann’s systems theory}, volume={36}, DOI={<a href=\"https://doi.org/10.1007/s12525-026-00889-w\">10.1007/s12525-026-00889-w</a>}, number={137}, journal={Electronic Markets}, publisher={Springer Science and Business Media LLC}, author={Beverungen, Daniel and Poeppelbuss, Jens and Hemmrich, Simon and Iqbal, Taskeen}, year={2026} }","mla":"Beverungen, Daniel, et al. “Service through Communication—Conceptualizing Service Systems with Luhmann’s Systems Theory.” <i>Electronic Markets</i>, vol. 36, no. 1, 37, Springer Science and Business Media LLC, 2026, doi:<a href=\"https://doi.org/10.1007/s12525-026-00889-w\">10.1007/s12525-026-00889-w</a>.","short":"D. Beverungen, J. Poeppelbuss, S. Hemmrich, T. Iqbal, Electronic Markets 36 (2026).","chicago":"Beverungen, Daniel, Jens Poeppelbuss, Simon Hemmrich, and Taskeen Iqbal. “Service through Communication—Conceptualizing Service Systems with Luhmann’s Systems Theory.” <i>Electronic Markets</i> 36, no. 1 (2026). <a href=\"https://doi.org/10.1007/s12525-026-00889-w\">https://doi.org/10.1007/s12525-026-00889-w</a>.","apa":"Beverungen, D., Poeppelbuss, J., Hemmrich, S., &#38; Iqbal, T. (2026). Service through communication—Conceptualizing service systems with Luhmann’s systems theory. <i>Electronic Markets</i>, <i>36</i>(1), Article 37. <a href=\"https://doi.org/10.1007/s12525-026-00889-w\">https://doi.org/10.1007/s12525-026-00889-w</a>","ieee":"D. Beverungen, J. Poeppelbuss, S. Hemmrich, and T. Iqbal, “Service through communication—Conceptualizing service systems with Luhmann’s systems theory,” <i>Electronic Markets</i>, vol. 36, no. 1, Art. no. 37, 2026, doi: <a href=\"https://doi.org/10.1007/s12525-026-00889-w\">10.1007/s12525-026-00889-w</a>."},"file_date_updated":"2026-04-21T13:14:30Z","project":[{"_id":"1250","name":"SHAPE : Gestaltung von Dienstleistungsentwicklungsprozessen und lnnovationspartnerschaften mit Unternehmen"}],"quality_controlled":"1","oa":"1","author":[{"full_name":"Beverungen, Daniel","last_name":"Beverungen","first_name":"Daniel"},{"full_name":"Poeppelbuss, Jens","last_name":"Poeppelbuss","first_name":"Jens"},{"last_name":"Hemmrich","first_name":"Simon","full_name":"Hemmrich, Simon"},{"first_name":"Taskeen","last_name":"Iqbal","full_name":"Iqbal, Taskeen"}],"publication_identifier":{"issn":["1019-6781","1422-8890"]},"title":"Service through communication—Conceptualizing service systems with Luhmann’s systems theory","year":"2026","intvolume":"        36","article_type":"original","date_updated":"2026-04-21T13:18:35Z","publication_status":"published","language":[{"iso":"eng"}],"main_file_link":[{"url":"https://link.springer.com/content/pdf/10.1007/s12525-026-00889-w.pdf","open_access":"1"}],"article_number":"37","doi":"10.1007/s12525-026-00889-w","issue":"1","publication":"Electronic Markets","abstract":[{"text":"Service research has evolved into an interdisciplinary research field that bridges diverse disciplines, including information systems (IS) and marketing. Nearly two decades ago, the service system concept was introduced as a foundational abstraction in service research, drawing on ideas from the service-dominant logic (S-D logic) of marketing. Despite its widespread adoption in service research, particularly in the IS discipline, the service system concept lacks a solid theoretical foundation. This has resulted in conceptual ambiguity and overlap with related constructs, such as service ecosystems. Moreover, it has largely remained a static analytical lens, insufficiently capturing dynamic service phenomena, including value co-creation and co-destruction, as well as the emergence of institutional arrangements. To address these limitations, we propose Luhmann’s systems theory (LST) as a robust framework for conceptualizing service systems as autopoietic (self-creating) systems, in which communication serves as the fundamental mechanism that drives value co-creation. We derive five theoretical propositions from this re-conceptualization that clarify conceptual ambiguity and allow researchers to explore dynamic service phenomena in greater depth. Given LST’s general approach, our conceptualization provides a theoretically grounded, interdisciplinary foundation for advancing service research.","lang":"eng"}],"date_created":"2026-04-21T13:13:02Z","file":[{"date_updated":"2026-04-21T13:14:30Z","relation":"main_file","access_level":"closed","file_size":2793039,"file_name":"Service is Communication - EM Paper.pdf","success":1,"content_type":"application/pdf","file_id":"65477","creator":"dabe","date_created":"2026-04-21T13:14:30Z"}],"department":[{"_id":"195"},{"_id":"534"}],"type":"journal_article","keyword":["Service system","Service ecosystem","Systems theory","Service research"]},{"user_id":"107378","volume":46,"page":"114-117","_id":"65480","publisher":"Beltz Verlagsgruppe GmbH & Co. KG","status":"public","citation":{"chicago":"Reichenbach, Alexandra Maria, and Sylvia Jäde. “Erziehungswissenschaftliche Perspektiven auf Familie und ihre Öffentlichkeit(en). Bericht zur Tagung des Netzwerks Erziehungswissenschaftliche Familienforschung (EWIFF) „Familie und ihre Öffentlichkeit(en)“ von 7. bis 8. Juni an der Universität Erfurt.” <i>ZSE (Zeitschrift für Soziologie der Erziehung und Sozialisation)</i> 46, no. 1 (2026): 114–17. <a href=\"https://doi.org/10.3262/zse2601101\">https://doi.org/10.3262/zse2601101</a>.","short":"A.M. Reichenbach, S. Jäde, ZSE (Zeitschrift für Soziologie der Erziehung und Sozialisation) 46 (2026) 114–117.","ieee":"A. M. Reichenbach and S. Jäde, “Erziehungswissenschaftliche Perspektiven auf Familie und ihre Öffentlichkeit(en). Bericht zur Tagung des Netzwerks Erziehungswissenschaftliche Familienforschung (EWIFF) „Familie und ihre Öffentlichkeit(en)“ von 7. bis 8. Juni an der Universität Erfurt.,” <i>ZSE (Zeitschrift für Soziologie der Erziehung und Sozialisation)</i>, vol. 46, no. 1, pp. 114–117, 2026, doi: <a href=\"https://doi.org/10.3262/zse2601101\">10.3262/zse2601101</a>.","apa":"Reichenbach, A. M., &#38; Jäde, S. (2026). Erziehungswissenschaftliche Perspektiven auf Familie und ihre Öffentlichkeit(en). Bericht zur Tagung des Netzwerks Erziehungswissenschaftliche Familienforschung (EWIFF) „Familie und ihre Öffentlichkeit(en)“ von 7. bis 8. Juni an der Universität Erfurt. <i>ZSE (Zeitschrift für Soziologie der Erziehung und Sozialisation)</i>, <i>46</i>(1), 114–117. <a href=\"https://doi.org/10.3262/zse2601101\">https://doi.org/10.3262/zse2601101</a>","bibtex":"@article{Reichenbach_Jäde_2026, title={Erziehungswissenschaftliche Perspektiven auf Familie und ihre Öffentlichkeit(en). Bericht zur Tagung des Netzwerks Erziehungswissenschaftliche Familienforschung (EWIFF) „Familie und ihre Öffentlichkeit(en)“ von 7. bis 8. Juni an der Universität Erfurt.}, volume={46}, DOI={<a href=\"https://doi.org/10.3262/zse2601101\">10.3262/zse2601101</a>}, number={1}, journal={ZSE (Zeitschrift für Soziologie der Erziehung und Sozialisation)}, publisher={Beltz Verlagsgruppe GmbH &#38; Co. KG}, author={Reichenbach, Alexandra Maria and Jäde, Sylvia}, year={2026}, pages={114–117} }","ama":"Reichenbach AM, Jäde S. Erziehungswissenschaftliche Perspektiven auf Familie und ihre Öffentlichkeit(en). Bericht zur Tagung des Netzwerks Erziehungswissenschaftliche Familienforschung (EWIFF) „Familie und ihre Öffentlichkeit(en)“ von 7. bis 8. Juni an der Universität Erfurt. <i>ZSE (Zeitschrift für Soziologie der Erziehung und Sozialisation)</i>. 2026;46(1):114-117. doi:<a href=\"https://doi.org/10.3262/zse2601101\">10.3262/zse2601101</a>","mla":"Reichenbach, Alexandra Maria, and Sylvia Jäde. “Erziehungswissenschaftliche Perspektiven auf Familie und ihre Öffentlichkeit(en). Bericht zur Tagung des Netzwerks Erziehungswissenschaftliche Familienforschung (EWIFF) „Familie und ihre Öffentlichkeit(en)“ von 7. bis 8. Juni an der Universität Erfurt.” <i>ZSE (Zeitschrift für Soziologie der Erziehung und Sozialisation)</i>, vol. 46, no. 1, Beltz Verlagsgruppe GmbH &#38; Co. KG, 2026, pp. 114–17, doi:<a href=\"https://doi.org/10.3262/zse2601101\">10.3262/zse2601101</a>."},"doi":"10.3262/zse2601101","language":[{"iso":"ger"}],"publication_status":"published","date_updated":"2026-04-21T14:48:16Z","intvolume":"        46","title":"Erziehungswissenschaftliche Perspektiven auf Familie und ihre Öffentlichkeit(en). Bericht zur Tagung des Netzwerks Erziehungswissenschaftliche Familienforschung (EWIFF) „Familie und ihre Öffentlichkeit(en)“ von 7. bis 8. Juni an der Universität Erfurt.","year":"2026","author":[{"full_name":"Reichenbach, Alexandra Maria","first_name":"Alexandra Maria","last_name":"Reichenbach","id":"107378"},{"first_name":"Sylvia","last_name":"Jäde","full_name":"Jäde, Sylvia"}],"publication_identifier":{"issn":["1436-1957"]},"type":"journal_article","date_created":"2026-04-21T14:45:32Z","abstract":[{"lang":"eng","text":"<jats:p>Die Bonner Ethik-Erklärung/Über Künstliche Intelligenzen, Bildung und Subjektwerdung/Tagungsberichte</jats:p>"}],"issue":"1","publication":"ZSE (Zeitschrift für Soziologie der Erziehung und Sozialisation)"},{"project":[{"_id":"376","name":"Interdependenz in der Beziehung zwischen Erwachsenen und ihren Eltern II"}],"citation":{"bibtex":"@article{Schönert_Sommer_Buhl_2026, title={Prädiktoren der persönlichen Verpflichtung in Eltern-Kind-Beziehungen im Erwachsenenalter}, DOI={<a href=\"https://doi.org/10.1026/0049-8637/a000315\">10.1026/0049-8637/a000315</a>}, journal={Zeitschrift für Entwicklungspsychologie und Pädagogische Psychologie}, publisher={Hogrefe}, author={Schönert, Kathrin and Sommer, Sabrina and Buhl, Heike M.}, year={2026} }","ama":"Schönert K, Sommer S, Buhl HM. Prädiktoren der persönlichen Verpflichtung in Eltern-Kind-Beziehungen im Erwachsenenalter. <i>Zeitschrift für Entwicklungspsychologie und Pädagogische Psychologie</i>. Published online 2026. doi:<a href=\"https://doi.org/10.1026/0049-8637/a000315\">10.1026/0049-8637/a000315</a>","mla":"Schönert, Kathrin, et al. “Prädiktoren Der Persönlichen Verpflichtung in Eltern-Kind-Beziehungen Im Erwachsenenalter.” <i>Zeitschrift Für Entwicklungspsychologie Und Pädagogische Psychologie</i>, Hogrefe, 2026, doi:<a href=\"https://doi.org/10.1026/0049-8637/a000315\">10.1026/0049-8637/a000315</a>.","chicago":"Schönert, Kathrin, Sabrina Sommer, and Heike M. Buhl. “Prädiktoren Der Persönlichen Verpflichtung in Eltern-Kind-Beziehungen Im Erwachsenenalter.” <i>Zeitschrift Für Entwicklungspsychologie Und Pädagogische Psychologie</i>, 2026. <a href=\"https://doi.org/10.1026/0049-8637/a000315\">https://doi.org/10.1026/0049-8637/a000315</a>.","short":"K. Schönert, S. Sommer, H.M. Buhl, Zeitschrift Für Entwicklungspsychologie Und Pädagogische Psychologie (2026).","ieee":"K. Schönert, S. Sommer, and H. M. Buhl, “Prädiktoren der persönlichen Verpflichtung in Eltern-Kind-Beziehungen im Erwachsenenalter,” <i>Zeitschrift für Entwicklungspsychologie und Pädagogische Psychologie</i>, 2026, doi: <a href=\"https://doi.org/10.1026/0049-8637/a000315\">10.1026/0049-8637/a000315</a>.","apa":"Schönert, K., Sommer, S., &#38; Buhl, H. M. (2026). Prädiktoren der persönlichen Verpflichtung in Eltern-Kind-Beziehungen im Erwachsenenalter. <i>Zeitschrift Für Entwicklungspsychologie Und Pädagogische Psychologie</i>. <a href=\"https://doi.org/10.1026/0049-8637/a000315\">https://doi.org/10.1026/0049-8637/a000315</a>"},"publication":"Zeitschrift für Entwicklungspsychologie und Pädagogische Psychologie","oa":"1","department":[{"_id":"427"}],"type":"journal_article","date_created":"2026-04-21T16:38:09Z","date_updated":"2026-04-21T16:39:03Z","author":[{"last_name":"Schönert","first_name":"Kathrin","full_name":"Schönert, Kathrin"},{"first_name":"Sabrina","last_name":"Sommer","full_name":"Sommer, Sabrina","id":"36251"},{"id":"27152","full_name":"Buhl, Heike M.","first_name":"Heike M.","last_name":"Buhl"}],"status":"public","year":"2026","title":"Prädiktoren der persönlichen Verpflichtung in Eltern-Kind-Beziehungen im Erwachsenenalter","doi":"10.1026/0049-8637/a000315","user_id":"90826","language":[{"iso":"eng"}],"_id":"65481","publisher":"Hogrefe","main_file_link":[{"open_access":"1","url":"https://econtent.hogrefe.com/doi/full/10.1026/0049-8637/a000315"}]},{"date_updated":"2026-04-22T08:04:02Z","year":"2026","status":"public","title":"Untersuchung der Einflussfaktoren auf die Recyclingfähigkeit von flammgeschütztem Polyamid 12-Pulver beim selektiven Lasersintern (Studienarbeit)","author":[{"full_name":"Hüwel, Fabian","last_name":"Hüwel","first_name":"Fabian"}],"user_id":"72307","language":[{"iso":"eng"}],"_id":"65482","supervisor":[{"id":"464","orcid":"000-0001-8590-1921","last_name":"Schmid","first_name":"Hans-Joachim","full_name":"Schmid, Hans-Joachim"},{"id":"3959","orcid":"https://orcid.org/0000-0003-2611-5298","last_name":"Jesinghausen","first_name":"Steffen","full_name":"Jesinghausen, Steffen"},{"last_name":"Neitzel","first_name":"Fabian","orcid":"0009-0004-8412-3645 ","full_name":"Neitzel, Fabian","id":"72307"}],"citation":{"ama":"Hüwel F. <i>Untersuchung Der Einflussfaktoren Auf Die Recyclingfähigkeit von Flammgeschütztem Polyamid 12-Pulver Beim Selektiven Lasersintern (Studienarbeit)</i>.; 2026.","bibtex":"@book{Hüwel_2026, title={Untersuchung der Einflussfaktoren auf die Recyclingfähigkeit von flammgeschütztem Polyamid 12-Pulver beim selektiven Lasersintern (Studienarbeit)}, author={Hüwel, Fabian}, year={2026} }","mla":"Hüwel, Fabian. <i>Untersuchung Der Einflussfaktoren Auf Die Recyclingfähigkeit von Flammgeschütztem Polyamid 12-Pulver Beim Selektiven Lasersintern (Studienarbeit)</i>. 2026.","short":"F. Hüwel, Untersuchung Der Einflussfaktoren Auf Die Recyclingfähigkeit von Flammgeschütztem Polyamid 12-Pulver Beim Selektiven Lasersintern (Studienarbeit), 2026.","chicago":"Hüwel, Fabian. <i>Untersuchung Der Einflussfaktoren Auf Die Recyclingfähigkeit von Flammgeschütztem Polyamid 12-Pulver Beim Selektiven Lasersintern (Studienarbeit)</i>, 2026.","apa":"Hüwel, F. (2026). <i>Untersuchung der Einflussfaktoren auf die Recyclingfähigkeit von flammgeschütztem Polyamid 12-Pulver beim selektiven Lasersintern (Studienarbeit)</i>.","ieee":"F. Hüwel, <i>Untersuchung der Einflussfaktoren auf die Recyclingfähigkeit von flammgeschütztem Polyamid 12-Pulver beim selektiven Lasersintern (Studienarbeit)</i>. 2026."},"type":"mastersthesis","department":[{"_id":"150"},{"_id":"624"},{"_id":"9"}],"date_created":"2026-04-22T08:03:46Z"},{"user_id":"48864","volume":7,"_id":"65490","publisher":"Wiley","status":"public","citation":{"apa":"Järvinen, H., Parikka, J. M., Rajapaksha, R. P. T. N., Keller, A. C., &#38; Toppari, J. J. (2026). Towards Single‐Crystalline DNA Origami Lattices on Silicon Wafers for Bottom‐Up Nanofabrication. <i>Small Structures</i>, <i>7</i>(4), Article e202500813. <a href=\"https://doi.org/10.1002/sstr.202500813\">https://doi.org/10.1002/sstr.202500813</a>","ieee":"H. Järvinen, J. M. Parikka, R. P. T. N. Rajapaksha, A. C. Keller, and J. J. Toppari, “Towards Single‐Crystalline DNA Origami Lattices on Silicon Wafers for Bottom‐Up Nanofabrication,” <i>Small Structures</i>, vol. 7, no. 4, Art. no. e202500813, 2026, doi: <a href=\"https://doi.org/10.1002/sstr.202500813\">10.1002/sstr.202500813</a>.","short":"H. Järvinen, J.M. Parikka, R.P.T.N. Rajapaksha, A.C. Keller, J.J. Toppari, Small Structures 7 (2026).","chicago":"Järvinen, Heini, Johannes M. Parikka, R. P. Thiwangi N. Rajapaksha, Adrian Clemens Keller, and J. Jussi Toppari. “Towards Single‐Crystalline DNA Origami Lattices on Silicon Wafers for Bottom‐Up Nanofabrication.” <i>Small Structures</i> 7, no. 4 (2026). <a href=\"https://doi.org/10.1002/sstr.202500813\">https://doi.org/10.1002/sstr.202500813</a>.","mla":"Järvinen, Heini, et al. “Towards Single‐Crystalline DNA Origami Lattices on Silicon Wafers for Bottom‐Up Nanofabrication.” <i>Small Structures</i>, vol. 7, no. 4, e202500813, Wiley, 2026, doi:<a href=\"https://doi.org/10.1002/sstr.202500813\">10.1002/sstr.202500813</a>.","ama":"Järvinen H, Parikka JM, Rajapaksha RPTN, Keller AC, Toppari JJ. Towards Single‐Crystalline DNA Origami Lattices on Silicon Wafers for Bottom‐Up Nanofabrication. <i>Small Structures</i>. 2026;7(4). doi:<a href=\"https://doi.org/10.1002/sstr.202500813\">10.1002/sstr.202500813</a>","bibtex":"@article{Järvinen_Parikka_Rajapaksha_Keller_Toppari_2026, title={Towards Single‐Crystalline DNA Origami Lattices on Silicon Wafers for Bottom‐Up Nanofabrication}, volume={7}, DOI={<a href=\"https://doi.org/10.1002/sstr.202500813\">10.1002/sstr.202500813</a>}, number={4e202500813}, journal={Small Structures}, publisher={Wiley}, author={Järvinen, Heini and Parikka, Johannes M. and Rajapaksha, R. P. Thiwangi N. and Keller, Adrian Clemens and Toppari, J. Jussi}, year={2026} }"},"doi":"10.1002/sstr.202500813","article_number":"e202500813","language":[{"iso":"eng"}],"publication_status":"published","date_updated":"2026-04-22T16:17:22Z","intvolume":"         7","title":"Towards Single‐Crystalline DNA Origami Lattices on Silicon Wafers for Bottom‐Up Nanofabrication","year":"2026","author":[{"last_name":"Järvinen","first_name":"Heini","full_name":"Järvinen, Heini"},{"full_name":"Parikka, Johannes M.","first_name":"Johannes M.","last_name":"Parikka"},{"last_name":"Rajapaksha","first_name":"R. P. Thiwangi N.","full_name":"Rajapaksha, R. P. Thiwangi N."},{"id":"48864","orcid":"0000-0001-7139-3110","first_name":"Adrian Clemens","last_name":"Keller","full_name":"Keller, Adrian Clemens"},{"last_name":"Toppari","first_name":"J. Jussi","full_name":"Toppari, J. Jussi"}],"publication_identifier":{"issn":["2688-4062","2688-4062"]},"type":"journal_article","department":[{"_id":"302"}],"date_created":"2026-04-22T16:17:08Z","abstract":[{"lang":"eng","text":"<jats:p>In recent years, nanostructures assembled by DNA have found promising applications in optics, medicine, and sensing. DNA origami in particular provides unique self‐assembly properties, not only enabling a vast variety of functionalization schemes but also presenting a promising route to fabricate large‐scale, bottom‐up nanostructured arrays. This approach has comparable precision to electron beam lithography but avoids slow and expensive patterning steps. However, self‐assembly of lattices with high order and well‐defined periodicity requires careful tuning of the deposition parameters and interactions involved, which has been done mostly on mica so far. As mica is not compatible with standard microfabrication processes, we investigate here the assembly of DNA origami lattices on the most general microfabrication material, that is, silicon wafers, which has turned out to be rather challenging. We study how the forming of polycrystalline 2D‐fishnet‐type lattices is influenced by different incubation conditions and strengths of the origami–origami and origami‐surface interactions, with the aim to create large‐scale single‐crystalline lattices. The lattices are characterized by atomic force microscopy and analyzed for precision of formation, achievable domain size, and surface coverage of well‐formed lattices. Thanks to the silicon substrate, these DNA origami lattices can be further combined with traditional microfabrication processes to turn them, for example, into metamaterials with novel optical properties.</jats:p>"}],"publication":"Small Structures","issue":"4"},{"date_created":"2026-02-06T18:44:34Z","external_id":{"arxiv":["2508.08458"]},"department":[{"_id":"760"}],"oa":"1","type":"conference","citation":{"ama":"Das P, Heindorf S. Discrete Diffusion-Based Model-Level Explanation of Heterogeneous GNNs with Node Features. In: <i>Proceedings of the ACM Web Conference 2026 (WWW ’26)</i>. ACM; 2026.","bibtex":"@inproceedings{Das_Heindorf_2026, title={Discrete Diffusion-Based Model-Level Explanation of Heterogeneous GNNs with Node Features}, booktitle={Proceedings of the ACM Web Conference 2026 (WWW ’26)}, publisher={ACM}, author={Das, Pallabee and Heindorf, Stefan}, year={2026} }","mla":"Das, Pallabee, and Stefan Heindorf. “Discrete Diffusion-Based Model-Level Explanation of Heterogeneous GNNs with Node Features.” <i>Proceedings of the ACM Web Conference 2026 (WWW ’26)</i>, ACM, 2026.","chicago":"Das, Pallabee, and Stefan Heindorf. “Discrete Diffusion-Based Model-Level Explanation of Heterogeneous GNNs with Node Features.” In <i>Proceedings of the ACM Web Conference 2026 (WWW ’26)</i>. ACM, 2026.","short":"P. Das, S. Heindorf, in: Proceedings of the ACM Web Conference 2026 (WWW ’26), ACM, 2026.","apa":"Das, P., &#38; Heindorf, S. (2026). Discrete Diffusion-Based Model-Level Explanation of Heterogeneous GNNs with Node Features. <i>Proceedings of the ACM Web Conference 2026 (WWW ’26)</i>. The Web Conference, Dubai, United Arab Emirates.","ieee":"P. Das and S. Heindorf, “Discrete Diffusion-Based Model-Level Explanation of Heterogeneous GNNs with Node Features,” presented at the The Web Conference, Dubai, United Arab Emirates, 2026."},"publication":"Proceedings of the ACM Web Conference 2026 (WWW ’26)","abstract":[{"lang":"eng","text":"Many real-world datasets, such as citation networks, social networks, and molecular structures, are naturally represented as heterogeneous graphs, where nodes belong to different types and have additional features. For example, in a citation network, nodes representing \"Paper\" or \"Author\" may include attributes like keywords or affiliations. A critical machine learning task on these graphs is node classification, which is useful for applications such as fake news detection, corporate risk assessment, and molecular property prediction. Although Heterogeneous Graph Neural Networks (HGNNs) perform well in these contexts, their predictions remain opaque. Existing post-hoc explanation methods lack support for actual node features beyond one-hot encoding of node type and often fail to generate realistic, faithful explanations. To address these gaps, we propose DiGNNExplainer, a model-level explanation approach that synthesizes heterogeneous graphs with realistic node features via discrete denoising diffusion. In particular, we generate realistic discrete features (e.g., bag-of-words features) using diffusion models within a discrete space, whereas previous approaches are limited to continuous spaces. We evaluate our approach on multiple datasets and show that DiGNNExplainer produces explanations that are realistic and faithful to the model's decision-making, outperforming state-of-the-art methods."}],"language":[{"iso":"eng"}],"_id":"63918","publisher":"ACM","main_file_link":[{"open_access":"1","url":"https://dl.acm.org/doi/epdf/10.1145/3774904.3792518"}],"user_id":"11871","author":[{"first_name":"Pallabee","last_name":"Das","full_name":"Das, Pallabee"},{"id":"11871","orcid":"0000-0002-4525-6865","last_name":"Heindorf","first_name":"Stefan","full_name":"Heindorf, Stefan"}],"conference":{"end_date":"2026-04-17","location":"Dubai, United Arab Emirates","start_date":"2026-04-13","name":"The Web Conference"},"status":"public","year":"2026","title":"Discrete Diffusion-Based Model-Level Explanation of Heterogeneous GNNs with Node Features","date_updated":"2026-04-23T08:34:44Z"}]
